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(No Model.)

B. S. T. KENNEDY MARINE BOILER. 0

WITNEEEES UNITED STATES PATENT ()FFICE.

EDWARD s. T. KENNEDY, on NEW YORK, N. Y.

MARINE BOILER.

SPECIFICATION forming part of Letters Patent No. 329,912, dated November 10, 1885.

Application filed August 28, 1885. Serial No. 175,516. (No model.)

To aZZ whom it may concern:

Be it known that I, EDWARD S. T. KENNE- DY, a citizen of the United States of North America, and a resident of the city, county, and State of New York, have invented a new and useful Improvement in Marine Boilers, of which the following is aspecification.

Upright cylindrical boilers and boilers of the porcupinev type vertical cylinders with radiating tubeshave great height in proportion to their diameters, and when used as marine boilers in a heavy sea the water line or surface in them is constantly changing from the horizontal to planes of greater or lesser angles thereto, so that the water is often forced up into the boiler steam chamber or dome to such an extent as to enter the steam take-off pipe or pipes and thereby establish a siphon action by which the boiler-water or a considerable portion of it is rapidly drawn off.

The object of my invention is to obviate this objection; and the invention consists in making a central opening in the upper head of the boilercylinder, in securing over said opening an upright cylinder closed at the upper end, of same diameter as the opening, which shall comunicate with the the boiler steamchamber and extend well up into the smokestack, and in fixing in said smaller cylinder one or more elbow pipe or pipes whose vertical leg or legs, open at the top, shall extend nearly to the top of the smaller cylinder to take steam therefrom, and whose horizontal leg or legs, extending through a side or sides of the smaller cylinder or through the wall of the boiler steam-chamber, shall serve for the delivery of the steam.

In order to illustrate my improved device, I show it in the drawings applied to a boiler of the porcupine type.

Figure l is a sectional elevation showing my improved device applied to a marine boiler. Fig. 2 is a plan of the same, with hood and smoke-pipe removed.

Reference is to be had to the accompanying drawings, forming part of this specification, in which similar letters of reference indicate corresponding parts in all the figures.

In the drawings, A represents the boilerinclosing wall or shell; B, the hood, and B the smoke-pipe. Centrally fixed within the shell A is the vertical boiler-cylinder 0, provided with series of radial tubes at a, and D represents the grate-bars. All these parts are those of a boiler in common use, and are not parts of my invention.

I make a central opening, I), in the top of the boiler-cylinder O, and firmly secure over it an upright cylinder, E, of like diameter, communicating internally with the steamspace of the cylinder 0, and closed at the up per end. This cylinder E reaches up into the smoke-pipe B, in order to abstract a portion of the heat therein, when the boiler is in operation, for the drying of the steam, and it extends so far upward that no water could be carried from the boiler into its upper portion, however much the water in the boiler might be disturbed by the rolling or pitching of the vessel in a seaway. Within the cylinder E, I fix an elbow steam-takeoff pipe, F, which may have a coupling, as shown at d, with the open end of its vertical leg reaching up to near the top of said cylinder E, and with its horizontal leg extending laterally outward, as shown. The upper end of the steam-drying pipe F is so far above the boiler water-line that no ordinary motion of a vessel in a heavy sea could force said water up to it; hence the said pipe could not siphon the water from the boiler.

One or more pipes F may be arranged in the cylinder E, so that the steam could be distributed to several points, and the horizontal portion of said pipe or pipes may be directed out through the smoke-pipe or be carried low enough to be projected out through the hood or the boiler steam-space, as may bemost convenient, as shown in dotted lines, Fig. 1.

I am aware of the Patents Nos. 247,910,

291,580, and 314,308, and do not claim any construction and arrangement therein shown; but

lEIaving thus described my invention, I claim as new and desire to secure by Letters Patent The combination, with inclosing-shell A, hood B, and smoke-pipeBQ-Of aboiler adapted for marine purposes, constructed and arranged substantially as herein shown and described, consisting of an upright central cylinder, 0, provided with series of radial tubes a, having in the top of its steam-space an opening over which is fixed a long upright cylinder, E, g In testimony that I claim the foregoing as 10 closed at the top and extending up into the my invention Ihave signed my name, in pressmoke-pipeB to. near the top thereof, .and a tence' of twowitnesses, this 16th day of July, steam-drying steanrtake-off elbow-pipe, F, 1885. fixed Within the cylinder E, with its vertical leg reaching nearly to the top of said cylinder 1 EDVARD K and its horizontal leg projecting. outward for Vitnesses:

delivery of steam, as and for the purposes set 'JAooB'J. STORER, forth.

WM. E. STILLINGs. 

